Utica-Dunkirk FE3980C070 Pressure Switch 320788-704 and Carrier furnace blowers

and Carrier furnace blowers

The Reznor 103034 orifice features a machine-precise aperture designed for natural gas applications

Standard Lennox TXV kits like the 25W22 include the sensing bulb and capillary assembly required to accurately monitor the suction line temperature

allowing for local adjustments without reconfiguring the global BMS logic

replacing it with a new 12988-002 can help stabilize the flame pattern and correct ignition issues caused by improper air-fuel mixing

Utica-Dunkirk FE3980C070 Pressure Switch 320788-704 and Carrier furnace blowersThe Utica Dunkirk FE3980C070 Pressure Switch is an essential OEM safety component designed for high performance hydronic systems, including the CCB150 and CHB series boilers. As a veteran grade boiler water pressure switch, this part is engineered to monitor system pressure and prevent the burner from firing under unsafe low water or low pressure conditions. Built with ECR International sensors and featuring a 1 2" NPT connection, it ensures a secure,